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Archive for February, 2018
Posted by burkefj | Feb 17, 2018 @ 11:18 AM | 9,691 Views
I had a receiver and set of servos my family got me for christmas and I decided I wanted to do something as a rocket glider but also to call back to my first aileron plane, a Kraft Das Ugly Stik(mine was actually a hobby shack electric stik version).

I decided that since it was a rocket plane, and a semi futuristic design, I'd use canard but keep the tail and wing shape a-la ugly stik.

I used a doubled kf airfoil wing and non movable canard and elevon controls, 27" wingspan, 30.5" length, 2.6" diameter. Weight all up rtf is 11 oz.

I've gotten pretty good at doing indoor test glides to figure out max rearward CG, however in this case, even with a good canard cg calculator in hand, I was pretty tail heavy. The first flight I should have called it der Bodenjäger because it was hunting the ground, not the Sky......

It didn't help I was maidening in a 10 mph wind that was blowing downwind toward the launcher...Off the rail it pitched forward into the exhaust trail obscuring it, and I tried to react, but it wound up doing three nice 50 foot loops about 10' off the ground at the bottom with no control input, and settling into a perfect landing in the field. This was due in large part to my piloting prowess and the luck of the Irish....

Deciding that either I got some inadvertent canard incidence or tail heaviness I added .3 oz nose weight and gave it another try. This time it boosted much better, I moved the launcher and myself so I was down wind...Continue Reading